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/drivers/isdn/hisax/avm_a1.c

http://github.com/mirrors/linux
C | 307 lines | 262 code | 30 blank | 15 comment | 28 complexity | a5f4ad8e7740fb816aac8412630f49e7 MD5 | raw file
  1/* $Id: avm_a1.c,v 2.15.2.4 2004/01/13 21:46:03 keil Exp $
  2 *
  3 * low level stuff for AVM A1 (Fritz) isdn cards
  4 *
  5 * Author       Karsten Keil
  6 * Copyright    by Karsten Keil      <keil@isdn4linux.de>
  7 *
  8 * This software may be used and distributed according to the terms
  9 * of the GNU General Public License, incorporated herein by reference.
 10 *
 11 */
 12
 13#include <linux/init.h>
 14#include "hisax.h"
 15#include "isac.h"
 16#include "hscx.h"
 17#include "isdnl1.h"
 18
 19static const char *avm_revision = "$Revision: 2.15.2.4 $";
 20
 21#define	 AVM_A1_STAT_ISAC	0x01
 22#define	 AVM_A1_STAT_HSCX	0x02
 23#define	 AVM_A1_STAT_TIMER	0x04
 24
 25#define byteout(addr, val) outb(val, addr)
 26#define bytein(addr) inb(addr)
 27
 28static inline u_char
 29readreg(unsigned int adr, u_char off)
 30{
 31	return (bytein(adr + off));
 32}
 33
 34static inline void
 35writereg(unsigned int adr, u_char off, u_char data)
 36{
 37	byteout(adr + off, data);
 38}
 39
 40
 41static inline void
 42read_fifo(unsigned int adr, u_char *data, int size)
 43{
 44	insb(adr, data, size);
 45}
 46
 47static void
 48write_fifo(unsigned int adr, u_char *data, int size)
 49{
 50	outsb(adr, data, size);
 51}
 52
 53/* Interface functions */
 54
 55static u_char
 56ReadISAC(struct IsdnCardState *cs, u_char offset)
 57{
 58	return (readreg(cs->hw.avm.isac, offset));
 59}
 60
 61static void
 62WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value)
 63{
 64	writereg(cs->hw.avm.isac, offset, value);
 65}
 66
 67static void
 68ReadISACfifo(struct IsdnCardState *cs, u_char *data, int size)
 69{
 70	read_fifo(cs->hw.avm.isacfifo, data, size);
 71}
 72
 73static void
 74WriteISACfifo(struct IsdnCardState *cs, u_char *data, int size)
 75{
 76	write_fifo(cs->hw.avm.isacfifo, data, size);
 77}
 78
 79static u_char
 80ReadHSCX(struct IsdnCardState *cs, int hscx, u_char offset)
 81{
 82	return (readreg(cs->hw.avm.hscx[hscx], offset));
 83}
 84
 85static void
 86WriteHSCX(struct IsdnCardState *cs, int hscx, u_char offset, u_char value)
 87{
 88	writereg(cs->hw.avm.hscx[hscx], offset, value);
 89}
 90
 91/*
 92 * fast interrupt HSCX stuff goes here
 93 */
 94
 95#define READHSCX(cs, nr, reg) readreg(cs->hw.avm.hscx[nr], reg)
 96#define WRITEHSCX(cs, nr, reg, data) writereg(cs->hw.avm.hscx[nr], reg, data)
 97#define READHSCXFIFO(cs, nr, ptr, cnt) read_fifo(cs->hw.avm.hscxfifo[nr], ptr, cnt)
 98#define WRITEHSCXFIFO(cs, nr, ptr, cnt) write_fifo(cs->hw.avm.hscxfifo[nr], ptr, cnt)
 99
100#include "hscx_irq.c"
101
102static irqreturn_t
103avm_a1_interrupt(int intno, void *dev_id)
104{
105	struct IsdnCardState *cs = dev_id;
106	u_char val, sval;
107	u_long flags;
108
109	spin_lock_irqsave(&cs->lock, flags);
110	while (((sval = bytein(cs->hw.avm.cfg_reg)) & 0xf) != 0x7) {
111		if (!(sval & AVM_A1_STAT_TIMER)) {
112			byteout(cs->hw.avm.cfg_reg, 0x1E);
113			sval = bytein(cs->hw.avm.cfg_reg);
114		} else if (cs->debug & L1_DEB_INTSTAT)
115			debugl1(cs, "avm IntStatus %x", sval);
116		if (!(sval & AVM_A1_STAT_HSCX)) {
117			val = readreg(cs->hw.avm.hscx[1], HSCX_ISTA);
118			if (val)
119				hscx_int_main(cs, val);
120		}
121		if (!(sval & AVM_A1_STAT_ISAC)) {
122			val = readreg(cs->hw.avm.isac, ISAC_ISTA);
123			if (val)
124				isac_interrupt(cs, val);
125		}
126	}
127	writereg(cs->hw.avm.hscx[0], HSCX_MASK, 0xFF);
128	writereg(cs->hw.avm.hscx[1], HSCX_MASK, 0xFF);
129	writereg(cs->hw.avm.isac, ISAC_MASK, 0xFF);
130	writereg(cs->hw.avm.isac, ISAC_MASK, 0x0);
131	writereg(cs->hw.avm.hscx[0], HSCX_MASK, 0x0);
132	writereg(cs->hw.avm.hscx[1], HSCX_MASK, 0x0);
133	spin_unlock_irqrestore(&cs->lock, flags);
134	return IRQ_HANDLED;
135}
136
137static inline void
138release_ioregs(struct IsdnCardState *cs, int mask)
139{
140	release_region(cs->hw.avm.cfg_reg, 8);
141	if (mask & 1)
142		release_region(cs->hw.avm.isac + 32, 32);
143	if (mask & 2)
144		release_region(cs->hw.avm.isacfifo, 1);
145	if (mask & 4)
146		release_region(cs->hw.avm.hscx[0] + 32, 32);
147	if (mask & 8)
148		release_region(cs->hw.avm.hscxfifo[0], 1);
149	if (mask & 0x10)
150		release_region(cs->hw.avm.hscx[1] + 32, 32);
151	if (mask & 0x20)
152		release_region(cs->hw.avm.hscxfifo[1], 1);
153}
154
155static int
156AVM_card_msg(struct IsdnCardState *cs, int mt, void *arg)
157{
158	u_long flags;
159
160	switch (mt) {
161	case CARD_RESET:
162		return (0);
163	case CARD_RELEASE:
164		release_ioregs(cs, 0x3f);
165		return (0);
166	case CARD_INIT:
167		spin_lock_irqsave(&cs->lock, flags);
168		inithscxisac(cs, 1);
169		byteout(cs->hw.avm.cfg_reg, 0x16);
170		byteout(cs->hw.avm.cfg_reg, 0x1E);
171		inithscxisac(cs, 2);
172		spin_unlock_irqrestore(&cs->lock, flags);
173		return (0);
174	case CARD_TEST:
175		return (0);
176	}
177	return (0);
178}
179
180int setup_avm_a1(struct IsdnCard *card)
181{
182	u_char val;
183	struct IsdnCardState *cs = card->cs;
184	char tmp[64];
185
186	strcpy(tmp, avm_revision);
187	printk(KERN_INFO "HiSax: AVM driver Rev. %s\n", HiSax_getrev(tmp));
188	if (cs->typ != ISDN_CTYPE_A1)
189		return (0);
190
191	cs->hw.avm.cfg_reg = card->para[1] + 0x1800;
192	cs->hw.avm.isac = card->para[1] + 0x1400 - 0x20;
193	cs->hw.avm.hscx[0] = card->para[1] + 0x400 - 0x20;
194	cs->hw.avm.hscx[1] = card->para[1] + 0xc00 - 0x20;
195	cs->hw.avm.isacfifo = card->para[1] + 0x1000;
196	cs->hw.avm.hscxfifo[0] = card->para[1];
197	cs->hw.avm.hscxfifo[1] = card->para[1] + 0x800;
198	cs->irq = card->para[0];
199	if (!request_region(cs->hw.avm.cfg_reg, 8, "avm cfg")) {
200		printk(KERN_WARNING
201		       "HiSax: AVM A1 config port %x-%x already in use\n",
202		       cs->hw.avm.cfg_reg,
203		       cs->hw.avm.cfg_reg + 8);
204		return (0);
205	}
206	if (!request_region(cs->hw.avm.isac + 32, 32, "HiSax isac")) {
207		printk(KERN_WARNING
208		       "HiSax: AVM A1 isac ports %x-%x already in use\n",
209		       cs->hw.avm.isac + 32,
210		       cs->hw.avm.isac + 64);
211		release_ioregs(cs, 0);
212		return (0);
213	}
214	if (!request_region(cs->hw.avm.isacfifo, 1, "HiSax isac fifo")) {
215		printk(KERN_WARNING
216		       "HiSax: AVM A1 isac fifo port %x already in use\n",
217		       cs->hw.avm.isacfifo);
218		release_ioregs(cs, 1);
219		return (0);
220	}
221	if (!request_region(cs->hw.avm.hscx[0] + 32, 32, "HiSax hscx A")) {
222		printk(KERN_WARNING
223		       "HiSax: AVM A1 hscx A ports %x-%x already in use\n",
224		       cs->hw.avm.hscx[0] + 32,
225		       cs->hw.avm.hscx[0] + 64);
226		release_ioregs(cs, 3);
227		return (0);
228	}
229	if (!request_region(cs->hw.avm.hscxfifo[0], 1, "HiSax hscx A fifo")) {
230		printk(KERN_WARNING
231		       "HiSax: AVM A1 hscx A fifo port %x already in use\n",
232		       cs->hw.avm.hscxfifo[0]);
233		release_ioregs(cs, 7);
234		return (0);
235	}
236	if (!request_region(cs->hw.avm.hscx[1] + 32, 32, "HiSax hscx B")) {
237		printk(KERN_WARNING
238		       "HiSax: AVM A1 hscx B ports %x-%x already in use\n",
239		       cs->hw.avm.hscx[1] + 32,
240		       cs->hw.avm.hscx[1] + 64);
241		release_ioregs(cs, 0xf);
242		return (0);
243	}
244	if (!request_region(cs->hw.avm.hscxfifo[1], 1, "HiSax hscx B fifo")) {
245		printk(KERN_WARNING
246		       "HiSax: AVM A1 hscx B fifo port %x already in use\n",
247		       cs->hw.avm.hscxfifo[1]);
248		release_ioregs(cs, 0x1f);
249		return (0);
250	}
251	byteout(cs->hw.avm.cfg_reg, 0x0);
252	HZDELAY(HZ / 5 + 1);
253	byteout(cs->hw.avm.cfg_reg, 0x1);
254	HZDELAY(HZ / 5 + 1);
255	byteout(cs->hw.avm.cfg_reg, 0x0);
256	HZDELAY(HZ / 5 + 1);
257	val = cs->irq;
258	if (val == 9)
259		val = 2;
260	byteout(cs->hw.avm.cfg_reg + 1, val);
261	HZDELAY(HZ / 5 + 1);
262	byteout(cs->hw.avm.cfg_reg, 0x0);
263	HZDELAY(HZ / 5 + 1);
264
265	val = bytein(cs->hw.avm.cfg_reg);
266	printk(KERN_INFO "AVM A1: Byte at %x is %x\n",
267	       cs->hw.avm.cfg_reg, val);
268	val = bytein(cs->hw.avm.cfg_reg + 3);
269	printk(KERN_INFO "AVM A1: Byte at %x is %x\n",
270	       cs->hw.avm.cfg_reg + 3, val);
271	val = bytein(cs->hw.avm.cfg_reg + 2);
272	printk(KERN_INFO "AVM A1: Byte at %x is %x\n",
273	       cs->hw.avm.cfg_reg + 2, val);
274	val = bytein(cs->hw.avm.cfg_reg);
275	printk(KERN_INFO "AVM A1: Byte at %x is %x\n",
276	       cs->hw.avm.cfg_reg, val);
277
278	printk(KERN_INFO "HiSax: AVM A1 config irq:%d cfg:0x%X\n",
279	       cs->irq,
280	       cs->hw.avm.cfg_reg);
281	printk(KERN_INFO
282	       "HiSax: isac:0x%X/0x%X\n",
283	       cs->hw.avm.isac + 32, cs->hw.avm.isacfifo);
284	printk(KERN_INFO
285	       "HiSax: hscx A:0x%X/0x%X  hscx B:0x%X/0x%X\n",
286	       cs->hw.avm.hscx[0] + 32, cs->hw.avm.hscxfifo[0],
287	       cs->hw.avm.hscx[1] + 32, cs->hw.avm.hscxfifo[1]);
288
289	cs->readisac = &ReadISAC;
290	cs->writeisac = &WriteISAC;
291	cs->readisacfifo = &ReadISACfifo;
292	cs->writeisacfifo = &WriteISACfifo;
293	cs->BC_Read_Reg = &ReadHSCX;
294	cs->BC_Write_Reg = &WriteHSCX;
295	cs->BC_Send_Data = &hscx_fill_fifo;
296	setup_isac(cs);
297	cs->cardmsg = &AVM_card_msg;
298	cs->irq_func = &avm_a1_interrupt;
299	ISACVersion(cs, "AVM A1:");
300	if (HscxVersion(cs, "AVM A1:")) {
301		printk(KERN_WARNING
302		       "AVM A1: wrong HSCX versions check IO address\n");
303		release_ioregs(cs, 0x3f);
304		return (0);
305	}
306	return (1);
307}